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Number of genus 2 sensed hypermaps with n darts.
7

%I #17 Oct 27 2024 20:29:37

%S 0,0,0,0,4,48,708,9807,119436,1355400,14561360,150429819

%N Number of genus 2 sensed hypermaps with n darts.

%H Mednykh, A.; Nedela, R. <a href="https://doi.org/10.1007/s10958-017-3555-5">Recent progress in enumeration of hypermaps</a>, J. Math. Sci., New York 226, No. 5, 635-654 (2017) and Zap. Nauchn. Semin. POMI 446, 139-164 (2016), table 4.

%H Timothy R. Walsh, <a href="http://www.info2.uqam.ca/~walsh_t/papers/GENERATING NONISOMORPHIC.pdf">Space-efficient generation of nonisomorphic maps and hypermaps</a>

%H T. R. Walsh, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL18/Walsh/walsh3.html">Space-Efficient Generation of Nonisomorphic Maps and Hypermaps</a>, J. Int. Seq. 18 (2015) # 15.4.3

%Y Cf. A090371, A118094, A214819, A214820, A057005.

%K nonn,more

%O 1,5

%A _N. J. A. Sloane_, Aug 01 2012